Okamoto Takako (岡本貴子) was a Japanese talent and member #35 of the former idol group Onyanko Club.
Okamoto Takako got her start in show business when she joined the idol group Onyanko Club after winning the Yuuyake Nyan Nyan-sponsored audition on January 10, 1986. Okamoto participated in the group's songs and the TV show Yuuyake Nyan Nyan. However, Okamoto graduated from the group on December 25, 1986 with Yumioka Mami and Takabatake Maki.
After graduating from Onyanko Club, she was a talento and appeared on a few TV shows. She participated in the Onyanko Club reunion in 2002. Soon after the reunion, she married and retired from show business.